AK
appkiro.comMicrophone access runs locally in your browser. Nothing is recorded or uploaded.
Input Level
-∞dBFS
Peak
-∞dBFS
Noise Floor
-100dBFS
Delay
1.0s
Microphone Tester opens a live audio loop from your input device and replays it back through the speakers after a delay you control. The page shows the waveform, frequency spectrum, and peak meter alongside running statistics for input level, peak, noise floor, detected speech, and clipping. Everything runs locally — the audio buffer never leaves your browser.
Use it before joining a meeting, recording a podcast, or troubleshooting a quiet headset. The replay confirms the right device is selected and that the signal is reaching the operating system.
Speech usually peaks around -12 dBFS to -6 dBFS. A noise floor below -50 dBFS is healthy for most rooms. Clipping above 0% means the input is too hot — back off the gain or move farther from the mic.
The replay path is loud enough to feed back into the microphone. Wear headphones, lower the volume, or disable Monitor before raising speakers.
Audio frames are read by the browser and processed in this tab. Nothing is recorded to disk and nothing is uploaded. Closing the tab releases the device immediately.